How "Gene Doping" Could Create Enhanced Olympians - 0 views
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How "Gene Doping" Could Create Enhanced Olympians
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lthough athletes at the Beijing Olympics have been subjected to some of the most aggressive testing ever for performance-enhancing drugs, no case of so-called gene doping has yet been detected.
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But experts say Oympic athletes may soon be able to genetically enhance their muscles to be faster, stronger, and better able to recover after workouts—if they aren't already.
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Gene-doping may also work by modifying genes that are already in an athlete's cells but whose functioning he or she might want to control.
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A synthetic virus called Repoxygen, for example, has been used this way in animal tests to insert a gene for erythropoietin (EPO), a hormone that tells the body to make more red blood cells, which carry oxygen to muscles.
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Injected into an athlete, a harmless virus could carry a performance-enhancing gene and splice it into a muscle cell, said Theodore Friedmann, a gene therapy researcher at the University of California, San Diego (quick genetics overview).
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"Training and athletic workouts probably do their work at least partly by modifying the expression of genes," Friedmann said.